This is the 405th most frequent Chinese word.
至於
"至於" means "as for" or "as to."
Indicates transitioning to address a specific topic or matter, 'your question'.
至於你的問題，我會稍後回答。
As for your question, I will answer it later.
Specifies a particular aspect ('accommodation') of the stated general subject ('trip').
這次旅行至於住宿，我們會自己安排。
As for accommodation for this trip, we will arrange it ourselves.
Introduces an aspect needing more deliberation, shifting the focus to the review of 'this proposal'.